L1 and l2 should equal appr 240 volts. On your surface infinite switch you should have appr 240 volts @ l1 and l2 and 240 out @ h1 and h2. Do you have your neutral? L1 to neutral at your source as well as l2 to neutral appr 120 volts. Most ecu will call for appr 120 volts at l2 to bake or broil, which ever your calling for. Some will also have l2 in and out as previously described, but on some units the l2 will not go thru the ecu, but straight to element.